B6 Flashcards
what is DNA
Deoxyribeonucleuic acid
what shape are DNA
Double helix
what is a genome
entire set of genetic material
what is a phenotype
characteristics
what is heterozygous
two different genes
what is a homozygous gene
two of the same gene
what is an allele
two different versions of the same gene
is cystic fibrosis dominant or reccessive
reccessive
what poldactyl dominant or reccessive
dominant
what can genetic engineering make
bacteria can be made into insulin
what are the issues with genetically modified crops
health issues
crops can spread
what are the classifications
kingdom
phylum
order
family
genus
species
what are the 3 domains
archea
bacteria
eukaryotes
what chromosones do females have
XX
What chromosones do males have
XY
what is the theory of evolution
all of todays species have evolved from simple life forms that first started to develop over 3 billion years ag0
what are the reasons for extinction
environment changes too quickly
new predator
new disease
what are the 3 ways fossils are formed
casts and impression
gradual replacement of minerals
preservation
how are fossils formed through casts and impressions
buried in soft materials like clay , clay hardens around it
how are fossils formed through preservation
no oxygen or moisture so decay microbes cannot decompose it
